A Novel Fractional-Discrete-Cosine-Transform-Based Reversible Watermarking for Healthcare Information Management Systems

Abstract EN

Digital watermarking is a good tool for healthcare information management systems.

The well-known quantization-index-modulation- (QIM-) based watermarking has its limitations as the host image will be destroyed; however, the recovery of medical image is essential to avoid misdiagnosis.

A transparent yet reversible watermarking algorithm is required for medical image applications.

In this paper, we propose a fractional-discrete-cosine-transform- (FDCT-) based watermarking to exactly reconstruct the host image.

Experimental results show that the FDCT-based watermarking is preferable to the QIM-based watermarking for the medical image applications.